Coiling reel



Oct. 22, 1940. A, B. MONTGOMERY 2,219,150

comma REEL Filed June 7, 1937- INVENTOR Alonzo B. Mamfgomely Patented Oct. 22, 1940 COILING REEL Alonzo B. Montgomery, Youngstown, Ohio, assignor to Cold Metal Process Company, Youngstown, Ohio '7 Claims;

This invention relates to coiling devices and, particularly, to a reel for coiling steel strip while it is being reduced in thickness by passing through a rolling mill.

In rolling steel strip in mills of the types shown in U. S. Patents to Keeney et al. 1,918,968 and Steckel 1,977,214, the strip after iss uing from the mill, is coiled on a reel disposed within a heating furnace. The conditions under which such reels operate are naturally quite severe. The high temperature at which the material must be maintained to facilitate rolling, the large weight of the coils being rolled in modern practice, and

' various other conditions to be pointed out hereinafter, introduce special problems into the design of a coiling reel for such service. The reels heretofore employed have been composed of a pair of spaced discs having a plurality of blades extending therebetween. Such reels must be so constructed that the leading end of the length of strip issuing from the mill will enter between adjacent blades without halting or interference and be bent around the leading edge of one of the blades. This operation alone imposes a heavy strain on the blade. Other forces which have to be guarded against include the centrifugal force on the blades due to the high speed of rotation of the reel, which tends to cause the blades to leave the discs, and the collapsing load exerted on the blades by the coil as it is wound on the reel. A further feature which it is desirable to provide is easy removability of the blades so that in case of failure of any one of them, it is not necessary to remove them all.

The coiling reel of my invention satisfactorily meets all the requirements outlined above and, in addition, is characterized by further novel features and advantages which will become apparent as the description thereof proceeds.

In accordance with my invention, I mount the blades on the discs in such manner that expansion and contraction thereof, which is caused by successive heating and cooling of the parts, can take place without exerting any distorting force on the discs or blades. The discs themselves have peripheral notches and projections. The blades are provided with lugs and the latter are secured to the projection In one form of the invention, the blades have integral end portions adapted to be seated in the notches of the discs. In another form, the blades have hooked portions adapted to cooperate with pins passing through the projections to hold the blades securely in position without obstructing easy removability when 55 necessary.

Application June 7, 1937, Serial No. 146,758

Figure 2 is a transverse sectional view along the line IIII of Figure 1 and Figure 3 is'a transverse sectional view through one of the blades along the line III-III of Fig. 1. Referring now in detail to the drawing, the side walls of a furnace of any suitable type are indicated at 36. The furnace may be such as that shown in the Steckel patent and Keeney et a1.

patent above mentioned. A shaft 35 extending through the furnace, is journaled in any suitable H bearings. Discs 31 and 38 are keyed on the shaft in spaced relation. A tube 39 extends between the hubs of the discs and the space between it and the shaft is filled with insulation 40. The discs are held against shoulders 4| on the shaft by rings 42 welded thereto.

The discs have peripheral notches or recesses 43 extending substantially tangentially. Between adjacent recesses 43, projections 44 having abutments 45 are located. Blades 46 extend between the discs and have closely spaced inturn'ed' lugs 41 at one end and similar lugs more widely spaced at the other end, as shown at 48. The spaced lugs or ears at opposite ends of the blades 46 partly overlie the projections 44. The edge of each blade spaced from the lugs or ears is rounded adjacent the ends of the blade, as shown at 49, to fit snugly in the notches or recesses 43. When a blade has been positioned with its ends in the notches, it may be locked in place by pins 50 passed through the ears and holes 4| in the projections 44 alined therewith. The pins are held in place by through-pins 52 and can easily be removed if replacement of a blade becomes necessary.

In operation, the reel rotates in the direction indicated by the arrow in Figure 2. The material enters between the trailing edge of one blade indicated at 53 and the leading edge 54 of the next succeeding blade. After entry between the blades, the leading end of the strip is bent around the leading edge of the succeeding blade. Since the pins 50 are almost in line with the leading edges of the blades, the force necessary to bend the end of the strip about the leading edge of one of the blades is not efi'ective through a very large moment arm upon the pins. The

abutments 45, furthermore, relieve the pins 50 of the collapsing load exerted by the coil as it is wound on the reel.

Longitudinal expansion and contraction of the blades 46, is permitted by reason of the wide spacing between the cars 48. Transverse expansion of the blades is permitted by a clearance space 55 between the trailing edges of the blades at their ends and the extremity of the recesses 43. Figure 3 shows the clearance which exists when the parts are relatively cold.

It will be apparent from the foregoing description that the invention provides a simple yet rugged form of reel particularly adapted for use in coiling furnaces operated in conjunction with reversing strip rolling mills. The construction is such as to enable the parts to withstand the relatively heavy forces to which they are subjected and free expansion of the parts on heating is permitted without introducing internal stresses. Each blade, furthermore, is individually removable without afiecting any of the other blades.

This application is a continuationin-part of application Serial No. 55,662, now Patent No. 2,116,121, granted May 3, 1938.

Although I have illustrated and described but one modification of the invention in addition to the preferred form, it will be apparent that numerous changes in the construction disclosed may be made without departing from the spirit of the invention or the scope of the appended claims. 4

I claim:

1. A coiling reel comprising a pair of discs mounted in spaced relation on a shaft, the peripheries of said discs having substantially tan- .10 gential notches formed therein, blades extending between said discs, the edges of the blades adjacent their ends fitting into said notches, ears on the blades overlying portions of the disc peripheries between said notches, and pins ex- 45 tending through said ears and discs parallel to said shaft.

2. A coiling reel comprising a pair of discs positioned coaxially and having peripheral notches, and blades extending between said discs having edge portions seated in said notches, said blades also having inturned ears adapted to receive securing pins traversing said discs.

3. A coiling reel comprising a pair of discs psitioned coaxially and having peripheral notches, blades extending between said discs having edge portions seated in said notches, said blades also having inturned ears adapted to receive securing pins traversing said discs, and abutments on the peripheries of the discs between said notches adapted to relieve said pins of the collapsing load on said blades.

4. A coiling reel comprising a pair of discs p0- sitioned coaxially and having peripheral notches, blades extending between said discs having edge portions seated in said notches, said blades also having inturned ears adapted to receive securing pins traversing said discs, the leading edge of each blade terminating adjacent the pins securing it.

5. A coiling reel comprising a pair of discs mounted in spaced relation on a shaft, the peripheries of said discs having substantially tangential notches formed therein, the notches of the two discs being in alinement, blades extending between said discs, the ends of one edge of each blade extending into .two 'of said alined notches in said discs, and means securing the other edge of each blade to the discs.

6. A coiling reel comprising a pair of discs mounted in spaced relation on a shaft, the peripheries of said discs having substantially tangential notches formed therein, the notches of the two discs being in alignment, and blades extending between said discs, the ends of one edge of each blade extending into two of said alined notches in said 'discs.

7. A coiling reel comprising spaced discs disposed coaxially, the peripheries of said discs being notched to provide radial projections, and blades extending between said discs and secured to said projections.

ALONZO B. MONTGOMERY. 

